PR5 — Cucumis sativus

Summary

CSA_5G155450 (PR5, also known as TLP, OSM-34, CsOSM34, PRR1, CsPR5, and several other synonyms) on cucumber chromosome 5 encodes a thaumatin-like protein belonging to the osmotin/thaumatin-like superfamily, with beta-glucanase and hydrolase activities. In cucumber, this gene is associated with antifungal innate immune response, systemic acquired resistance, response to viruses and bacteria, sex determination, regulation of anthocyanin anabolism, stomatal closure, seed germination, ABA signaling, and responses to jasmonic acid, ethylene, cadmium, UV-B, and salinity. The protein localizes to the apoplast, plant-type cell wall, vacuole, plasmodesma, secretory vesicles, and cytoplasm. The gene is associated with disease tolerance, osmotic stress response, proline accumulation, and resistance to pathogens including Verticillium dahliae and Pseudomonas syringae. Studies of related genes in other species connect the family to pathogen resistance, herbivore defense, cell wall integrity, and seed germination under salt stress.